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Issue 44, 2017
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Real-space imaging of translational and rotational dynamics of hard spheres from the fluid to the crystal

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Abstract

Using real-space imaging of single particles, we investigate the interplay between translational and rotational motion of tracer particles in suspensions of colloidal particles over a wide range of volume fractions from dilute fluid to densely packed crystal. To this end, we introduce a new type of spherical colloidal tracer particles containing two differently labelled fluorescent cores. The tracer particles can be combined with host particles enclosing a single fluorescent core and chemical and physical properties identical to the tracers. This leads to a system of spherical colloidal particles, in which spatio-temporal trajectories of rotation and translation of individual particles can be recorded simultaneously with full 360° resolution of rotational dynamics. Our analysis shows that translation and rotation of colloidal particles are uncorrelated and decoupled for all volume fractions irrespective of the phase of the particle system.

Graphical abstract: Real-space imaging of translational and rotational dynamics of hard spheres from the fluid to the crystal

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Publication details

The article was received on 14 Jul 2017, accepted on 18 Oct 2017 and first published on 18 Oct 2017


Article type: Paper
DOI: 10.1039/C7SM01400G
Citation: Soft Matter, 2017,13, 8240-8249
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    Real-space imaging of translational and rotational dynamics of hard spheres from the fluid to the crystal

    S. Schütter, J. Roller, A. Kick, J. Meijer and A. Zumbusch, Soft Matter, 2017, 13, 8240
    DOI: 10.1039/C7SM01400G

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